Vaporizing device.



H. P. MACDONALD.

VAPORIZING DEVICE.

APPLICATION FILED JAN-25. 1912.

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v wlmE sgg I l a INVENTOR. 5 BY g z 5 M H. P. MACDONALD.

VAPORIZING DEVICE.

APPLICATION FILED JAN-25. 1912.

1,147,41 6. Patented July 20, 1915.

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II I I H I I l l ll WITNESSES: '7 INT/{1N TOR.

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Nrr earns HARRY PJMACDONALD, 0'23 MQNTCLAIR, NEW JERSEY, ASSIG'NOR OF ONE-HALF T0 'UDOL'PHO SNEAD, OF NEW YORK, N. Y.

VAPORXZKNCT DEVICE.

Harare.

To all whom it may concern Be it known that I, HARRY l MACDONALD, a citizen of the United States, residing at. Montclair, in the county of Essex, State of New Jersey, have invented certain new and for its primary objects; the provision of an improved electrical vaporizing device which is simple and inexpensive, requires but little current, and in'whi ch there is no liability of premature explosion in the vaporizer; and in general the provision of an improved device of the character described which is effective in operation at all times, in cold as well as warm weather. These'together with such other objects as may hereinafter appear, or are incidental to my invention, I attain by means of a construction illustrated in preferred form in the accompanying drawings, wherein Figures 1, 2, 3 and 4: are transverse sections through various embodiments of my invention.

My invention is primarily designed. for use on gasolene engines and is intended to prime the cylinders with a charge of explosive mixture when the gasolene in the carbureters, either because of cold or other reason, does not vaporize. In carrying out my invention, I vaporize gasolene, etheror other volatile'liquid by means of an electrical heating member comprising a resistance coil 7 embedded in a pad or shield8 formed of a :porous nonconducting subsuch for example as asbestos, through which the gasolene will filter and contact with the coil, and vaporize. The gas thus formed passes readily through the pad but cannot ignite in the vaporizing chamber accidentally.

Referring to the arrangement illustrated in Figure 1, it will be seen that the pad and coil are placed in the pipe 9 leading to the carbureter and the engine cylinder in such.

position that the gas will be drawn into the cylinder when the engine is cranked. Mounted on the pipe 9 is a glass sided cup 10 filled with gasolene which enters the pipe and drips onto the pad 8 through the passage or port 11 in the stem 12 of the cup. This port 11 is controlled by means of a Specification of Letters Patent.

.plete the circuit.

Patented July 2th 1915.

Application filed January 25, 19 12. Serial No. 673,323.

valve stem 13 which is normally held in closed position by means of the spring 1+1 and the adjusting screw 15. One end of the wire forming the coil 7 is grounded at the point indicated by numeral 16 and the other end of the wire 17 is connected to the electro-magnet 18 and thence to the switch terminal 19, the switch 20 serving to com- A battery is diagrammatically indicated at 21. The valve stem 13 is actuated bythe lever 22 pivotally mounted on the cup 10. At the end of the lever 22 is an armature 23 which is attracted by the electro-magnet 18 when the circuit is closed, this movement lifting the valve stem from oii' its seat and permitting gasolene to drip onto the pad 8. It will be understood that air enters the pipe or passage 9 and passes through the carbureter in the usual manner so that when the engine is cranked the gas vapors and air will be sucked into the engine cylinders. It will be observed that the liquid strikes the pad at a point below the coil and is drawn up to the coil by the wick like action of the pad which prevents the coil being unduly chilled by a large quantity of liquid striking it directly.

In Fig. 2 1 have shown another embodiment of my invention. in which the pad and coil are mounted in a cylinder 24, one end of which opens into the pipe 9 leading from the carbureter to the engine, and the other end bein closed by the plug 25. Gasolene is admitted into the cylinder through the small pipe 26 and drips onto the pad as before, the flow of gasolene in the pipe being controlled by the valve 27 which is manually operated. The wiring is substantially asindicated in Fig. 2. When the coil becomes heated upon closing of the circuit, the vapor formed is carried into the engine cylinder when the latter is cranked. The pad of asbestos is inclosed in wire gauze 28 which serves to maintain it in proper shape but permits gasolene to soak into the pad and the vapor formed therein to escape therefrom.

In Fig. 3 I have illustrated still another modification of my invention. The arrangement of pad, coil and wiring is substantially the same as that already described but the pad and coil are located directly in the carbureter.

In Fig. 4 I have indicated a pipe 29 leading from the carburetor and a pipe 30 lead ing to the engine cylinders, these two pipes being connected by a union 31 which is provided with a cup-like well 32 in which are mounted the pad and coil. The gasolene is contained in a cup 10, the stem 11 of which extends through the union 31 into the well 32, the flow of gasolenebeing controlled by means of a valve stem 13 actuated by an electro-magnet 18 in the same general-manner shown in Figure 1. The well is covered by a shield composed of wire gauze 34, the purpose ofwhich is to prevent a premature explosionor backfiring. In this construction the gasolene drips directly on the pad.

The arrangement of the pad and coil is advantageous in that I am thereby enabled to use a very light weight wire which will require but little current to secure the proper degree of heat, the pad serving to maintain the coil proper coiled condition. The pad draws up the liquid in the manner of a wick and serves a further purpose in that it prevents the chilling of the coil which would take place were the coil unprotected and the gasolene came in direct contact therewith. By providing the pad of asbestos or similar non-conducting substance, there is no liability of the heat of the coil igniting the vapors. It will be obvious that a vaporizer may be used for a number of cylinders, it being understood that proper pipe connections are made.

A further advantage of the construction of Figures 1 and 4: is that the valve mechanism for controlling the admission of gasolene is automatically operated when the causes very rapid vaporization of the gasolene which has been absorbed by the pad. In very cold weather I have found that my device gives satisfactory results by using ether or other highly volatile liquids in place of gasolene. Other advantages will occur to those familiar with the art.

I claim 1. In a vaporizing device, a heating element comprising an electrical heating mem ber and a shield covering the heatin member adapted to keep the heating mem er'out of direct contact with the body of liquid to be vaporized, said shield being porous to soak up the liquid and to freely give off the gases vaporized.

2. A vaporizing device comprising an electrical heating member out of direct contact with the liquid to be vaporized, and a porous wick-like member adjacent to the heating member and adapted to soak up the liquid and give off the gases vaporized by the heat of the heating member.

In testimony whereof I have hereunto signed my name inthe presence of the two subscribed witnesses.

H. P. MACDONALD.

Witnesses:

C. C. GREENLEE, D. Z. Vrcron. 

